It's better to have a launcher for all tests, to make it easier to
initialize and manage the environment.

If "DEBUG=1"  a shell prompt will show up before the test runs.
Reviewed-by: NAlex Bennée <alex.bennee@linaro.org>
Signed-off-by: NFam Zheng <famz@redhat.com>
Message-id: 1464755128-32490-7-git-send-email-famz@redhat.com